CN107300185B - Spray head and soot blower - Google Patents
Spray head and soot blower Download PDFInfo
- Publication number
- CN107300185B CN107300185B CN201710390595.XA CN201710390595A CN107300185B CN 107300185 B CN107300185 B CN 107300185B CN 201710390595 A CN201710390595 A CN 201710390595A CN 107300185 B CN107300185 B CN 107300185B
- Authority
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- China
- Prior art keywords
- jet
- nozzle
- hollow body
- spray head
- center line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007921 spray Substances 0.000 title claims abstract description 40
- 239000004071 soot Substances 0.000 title claims abstract description 15
- 238000007664 blowing Methods 0.000 claims abstract description 44
- 230000008676 import Effects 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 abstract description 13
- 239000007924 injection Substances 0.000 abstract description 13
- 238000010008 shearing Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000243 solution Substances 0.000 abstract description 3
- 238000010926 purge Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000013517 stratification Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
Abstract
The present invention relates to boiler soot-blowing equipment technical fields, disclose a kind of spray head and soot blower, wherein, spray head includes hollow body (10), the hollow body has blowing medium import (102), extending direction on the side wall of hollow body along hollow body is disposed with first jet (104) and second nozzle (106), the cross section of the center line opposite hollow main body (10) of the center line and second nozzle of first jet tilts different angle, so that the jet stream of first jet (104) and second nozzle (106) intersects.In the inventive solutions, by the way that first jet and second nozzle are arranged on hollow body, and the cross section of the center line opposite hollow main body of the center line and second nozzle of first jet tilts different angle, intersect so that first jet and second nozzle form jet stream, to reduce jet stream to the maximum injection shearing force of water screen tube, and increase projected area.
Description
Technical field
The present invention relates to boiler soot-blowing equipment technical fields, and in particular, to a kind of spray head and the soot blowing including the spray head
Device.
Background technique
In recent years, with the development of economy, Methodology for Power Market is becoming tight, and electric power construction projects are continuously increased, unit capacity
Constantly increase, thermal power generation is still the major way for producing electric energy.The boiler of large-size thermal power plant is the chemical energy of coal
The energy conversion of high temperature and high pressure steam thermal energy is converted to, in the process of running, fouling of heating surface, coking are most common to boiler
The phenomenon that, the thermal coefficient for being deposited on the dust stratification layer on boiler heating surface is 0.0581~0.116w/ ㎡ DEG C, and boiler is heated
The thermal coefficient of face metal pipe-wall is 46.5~58.1w/ ㎡ DEG C, the thermal coefficient of the thermal conductivity ratio metal pipe-wall of dust stratification layer
Low 500~800 times.In the case where slight dust stratification, dust stratification layer bring additional thermal resistance can also be seriously affected in boiler heating surface
The transmitting of outer heat, increases exhaust gas temperature, and boiler thermal efficiency reduces, while dust stratification further results in heating surface and generates high/low temperature
Corrosion causes boiler tube explosion leakage phenomenon frequently to occur, and when serious, or even is forced blowing out cleaning, causes the cycle of operation significantly
Shorten.Therefore, in order to ensure Power Plant the safe and economic operation, various slag-blowing equipmemts are devised.
Currently, the slag-blowing equipmemt of station boiler installation is mainly steam sootblower, acoustic wave ash ejector and shock wave soot blower,
Wherein, steam sootblower is conventional sootblower, and usage quantity is most, and maximally efficient, is boiler soot-blowing necessary devices.Existing electricity
The nozzle of factory's steam sootblower generally only sprays steam from a nozzle to burner hearth, and the injection of soot blowing face is uneven, and single jet
Generally speed is higher at center, thus it is larger to the injection shearing force of part water-cooling wall pipeline section, make this part water-cooling wall pipeline section
Abrasion be easy to cause pipe explosion accident than more serious, leads to that the cost of overhaul is high and there are security risks.
Accordingly, there exist design a kind of injection of soot blowing face uniformly and necessity of the higher spray head of safety.
Summary of the invention
The object of the present invention is to provide a kind of spray head, which makes the injection of soot blowing face uniformly and safety is higher.
It is a further object of the present invention to provide a kind of soot blowers including above-mentioned spray head.
To achieve the goals above, the present invention provides a kind of spray head, including hollow body, which there is purging to be situated between
Matter import is disposed with first jet and second along the extending direction of the hollow body on the side wall of the hollow body
The cross section inclination of the relatively described hollow body of the center line of nozzle, the center line of the first jet and the second nozzle is not
Same angle, so that the jet stream of the first jet and the second nozzle intersects.
Preferably, the diameter of the first jet is greater than the diameter of the second nozzle, and the first jet is described
It is arranged on the side wall of hollow body than the second nozzle further from the position of the blowing medium import.
Preferably, the inclined angular range in cross section of the relatively described hollow body of the center line of the first jet is 0 °
~-6 °, the inclined angular range in cross section of the relatively described hollow body of the center line of the second nozzle is -3 °~3 °.
Preferably, the first jet and the second nozzle are the Laval-cavity nozzle of both ends expansion and middle shrinkage.
Preferably, the first jet and the second nozzle are aligned setting on the side wall of the hollow body.
Preferably, the first jet is at the center of the outer surface of the side wall and the second nozzle in the side wall
The distance between the center of outer surface be 25mm~35mm.
Preferably, the hollow body is the cylinder of top closure, and the blowing medium import is arranged in the cylinder
Bottom end.
Preferably, the first jet and the second nozzle are arranged in groups, and the spray head includes along the hollow body
The multiple groups being circumferentially arranged described in first jet and the second nozzle.
The present invention also provides a kind of soot blower, the soot blower includes blowing pipe and above-mentioned spray head, and the spray head is blown
Medium entrance is swept to be connected with the blowing pipe.
Preferably, the blowing medium import is provided with the internal screw thread for connecting the blowing pipe.
In the technical solution of invention, by the way that first jet and second nozzle, and first jet are arranged on hollow body
Center line and second nozzle center line opposite hollow main body cross section tilt different angle so that first jet and second
Nozzle forms jet stream and intersects, and specifically, the secondary jets of second nozzle is made to destroy the level-one jet stream of first jet at a certain angle
Center (because single jet generally forms highest speed at center, larger to the injection shearing force of water screen tube), drop
Its low normal velocity, increases its tangential velocity, to reduce jet stream to the maximum injection shearing force of water screen tube, reduces pipe
The probability that wall abrasion and Pipe breaks occur, and projected area is increased, dead angle can be effectively purged, safety is higher.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the side view of the spray head of the preferred embodiment of the present invention；
Fig. 2 is the main view of Fig. 1；
Fig. 3 is the top view of Fig. 1.
Description of symbols
10- hollow body, 102- blowing medium import, 104- first jet, 106- second nozzle.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
According to an aspect of the present invention, reference Fig. 1, Fig. 2 and Fig. 3 appropriate, spray head provided by the invention, including it is hollow
Main body 10, the hollow body 10 have blowing medium import 102, along the extension of hollow body 10 on the side wall of hollow body 10
Direction is disposed with first jet 104 and second nozzle 106, the center line of first jet 104 and the center of second nozzle 106
The cross section of line opposite hollow main body 10 tilts different angle, so that the jet stream of first jet 104 and second nozzle 106 intersects.
In above-mentioned specific embodiment, by the way that first jet 104 and second nozzle 106 are arranged on hollow body 10,
And the cross section of the center line opposite hollow main body 10 of the center line and second nozzle 106 of first jet 104 tilts different angle,
Intersect so that first jet 104 and second nozzle 106 form jet stream, specifically, makes the secondary jets of second nozzle 106 with certain
The center that angle destroys the level-one jet stream of first jet 104 is (right because single jet generally forms highest speed at center
The injection shearing force of water screen tube is larger), its normal velocity is reduced, its tangential velocity is increased, to reduce jet stream to water cooling
The maximum injection shearing force of wall pipe, reduces the probability that transducer wall's abrasion and Pipe breaks occur, and increase projected area, can
Effectively purging dead angle, safety are higher.
It should be noted that illustrating only setting first jet 104 and the formation jet stream friendship of second nozzle 106 in present embodiment
Multiple nozzles, such as setting three or four nozzles can also be arranged in the case where fork according to the speed of purging area and jet stream certainly,
And so that these nozzles is formed jet stream and intersect, it is roughly the same when since the working principle of multiple nozzles is arranged with two nozzles of setting,
It is no longer described in detail herein.
Preferably, the diameter of first jet is greater than the diameter of second nozzle, and first jet is on the side wall of hollow body
It is arranged in than second nozzle further from the position of blowing medium import 102.Blowing medium (such as steam) is from 104 He of first jet
Second nozzle 106 sprays into burner hearth respectively, and the first jet 104 being relatively large in diameter is used as main burner, is arranged on second nozzle 106
Side, is responsible for injection remote position, and the lesser second nozzle 106 of diameter is used as pilot jet, is arranged in closer apart from water-cooling wall
Position, be responsible for the closer position of injection, such design method can make to purge the jet stream punching that area is larger and water-cooling wall is subject to
It hits more uniform.
Wherein, in order to which the secondary jets for making second nozzle 106 destroy the level-one jet stream of first jet 104 at a certain angle
The effect of center is more preferable, it is preferable that the inclined angle model in cross section of the center line opposite hollow main body 10 of first jet 104
Enclosing is 0 °~-6 °, and the inclined angular range in cross section of the center line opposite hollow main body 10 of second nozzle 106 is -3 °~3 °.
It is found by numerical simulation, value within the above range, the jet stream intersection that first jet 104 and second nozzle 106 are formed has
It is preferable to influence, it can be effectively reduced the maximum injection stress to water-cooling wall.Certainly it (such as can also be penetrated according to actual working environment
Flow velocity degree and the intensity of water screen tube etc.) suitably change the tilt angle of first jet 104 and second nozzle 106, so as to
Reach better effect.
Wherein, there are many selections for the shape of first jet 104 and second nozzle 106, since blowing medium movement follows " stream
When body moves in pipe, the small place's flow velocity in section is big, and section general goal flow velocity is small " principle, it is preferable that first jet 104 and second
Nozzle 106 is daraf(reciprocal of farad) that (or making Lavalle) nozzle of both ends expansion and middle shrinkage.Design can be inlet high pressure in this way
The blowing medium (such as steam) of power raises speed, and forms the jet stream of high speed, reaches maximum in the middle section speed of nozzle, can reinforce
The effect of jet stream cross influence when final injection.Under the premise of can guarantee that jet stream intersects, first jet 104 and second nozzle
106 can shift to install on the side wall of hollow body 10, that is, be misaligned setting, it is preferable that as shown in Fig. 2,
One nozzle 104 and second nozzle 106 are aligned setting on the side wall of hollow body 10, jet stream can be made sufficiently to intersect in this way.
It can be according to the speed of the diameter and jet stream of first jet 104 and second nozzle 106 on the side wall of hollow body 10
Interval setting first jet 104 and second nozzle 106, it is preferable that outer surface of the first jet 104 in the side wall of hollow body
Center at a distance from second nozzle 106 is between the center of the outer surface of the side wall of hollow body be 25mm~35mm, tool
Body, centre distance spray head bottom surface (the i.e. setting blowing medium of hollow body 10 of the first jet 104 in the outer surface of side wall
The end face of import 102) range be 50mm to 80mm；Second nozzle 106 is in the centre distance bottom surface of the outer surface of side wall
Range is 15mm to 45mm, to intersect the jet stream of first jet 104 and second nozzle 106.
Wherein, the shape of hollow body 10 can there are many selections, it is preferable that hollow body 10 is the cylinder of top closure
Body, and the bottom end of cylinder is arranged in blowing medium import 102, and one end of hollow body 10 is arranged and is blown for what blowing medium entered
Medium entrance 102 is swept, other end closing, jet velocity when blowing medium can be made to spray is bigger, so as to increase purging area.
Preferably, first jet 104 and second nozzle 106 are arranged in groups, and spray head includes setting along the circumferential direction of hollow body 10
The multiple groups first jet 104 and second nozzle 106 set increase purging area, make to purge to further decrease jet stream shearing force
More evenly.
According to another aspect of the present invention, soot blower provided by the invention includes blowing pipe and above-mentioned spray head, spray head
Blowing medium import 102 be connected with blowing pipe, since the soot blower includes above-mentioned spray head, with above-mentioned spray head institute
There is advantage.
Wherein, the connection type of spray head and blowing pipe can there are many selections, it is preferable that blowing medium import 102 is arranged
There is the internal screw thread for connecting blowing pipe, certain blowing medium import 102 may also set up the external screw thread for connecting blowing pipe, adopt
Be threadedly coupled, can replacement spray head easy to disassemble, and connect spray head can closely with blowing pipe, sootblowing dielectric avoided to reveal, grasp
Make more safe and reliable.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of spray head, which is characterized in that including hollow body (10), which has blowing medium import
(102), the first spray is disposed with along the extending direction of the hollow body (10) on the side wall of the hollow body (10)
Mouth (104) and second nozzle (106), the center line of the first jet (104) and the center line phase of the second nozzle (106)
Different angle is tilted to the cross section of the hollow body (10), so that the first jet (104) and the second nozzle
(106) jet stream intersects.
2. spray head according to claim 1, which is characterized in that the diameter of the first jet (104) is greater than described second
The diameter of nozzle (106), and the first jet (104) is described in the setting position ratio on the side wall of the hollow body (10)
Setting position of the second nozzle (106) on the side wall of the hollow body (10) is further from the blowing medium import (102).
3. spray head according to claim 2, which is characterized in that during the center line of the first jet (104) is relatively described
The inclined angular range in cross section of empty main body (10) is 0 °~-6 °, during the center line of the second nozzle (106) is relatively described
The inclined angular range in cross section of empty main body (10) is -3 °~3 °.
4. spray head according to claim 3, which is characterized in that the first jet (104) and the second nozzle (106)
For both ends expansion and the Laval-cavity nozzle of middle shrinkage.
5. spray head described in any one of -4 according to claim 1, which is characterized in that the first jet (104) and described
Two nozzles (106) are aligned setting on the side wall of the hollow body (10).
6. spray head according to claim 5, which is characterized in that the first jet (104) is in the outer surface of the side wall
The center at place is 25mm~35mm at a distance from the second nozzle (106) is between the center of the outer surface of the side wall.
7. spray head described in any one of -4 according to claim 1, which is characterized in that the hollow body (10) is top closure
Cylinder, and the bottom end of the cylinder is arranged in the blowing medium import (102).
8. spray head described in any one of -4 according to claim 1, which is characterized in that the first jet (104) and described
Two nozzles (106) are arranged in groups, and the spray head includes the first spray described in multiple groups being circumferentially arranged along the hollow body (10)
Mouth (104) and the second nozzle (106).
9. a kind of soot blower, which is characterized in that including blowing pipe and spray head of any of claims 1-8, the spray
The blowing medium import (102) of head is connected with the blowing pipe.
10. soot blower according to claim 9, which is characterized in that the blowing medium import (102) is provided with for connecting
Connect the internal screw thread of the blowing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390595.XA CN107300185B (en) | 2017-05-27 | 2017-05-27 | Spray head and soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390595.XA CN107300185B (en) | 2017-05-27 | 2017-05-27 | Spray head and soot blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107300185A CN107300185A (en) | 2017-10-27 |
| CN107300185B true CN107300185B (en) | 2019-04-02 |
Family
ID=60137924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710390595.XA Active CN107300185B (en) | 2017-05-27 | 2017-05-27 | Spray head and soot blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107300185B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084314A (en) * | 2018-07-23 | 2018-12-25 | 北京光华纺织集团有限公司 | A kind of movable type gas shock-wave deashing rifle |
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|---|---|---|---|---|
| JPH11294750A (en) * | 1998-04-13 | 1999-10-29 | Babcock Hitachi Kk | Soot blower nozzle |
| WO2004101180A1 (en) * | 2003-05-13 | 2004-11-25 | Zakrytoe Aktsionernoe Obshchestvo 'legranproekt' | Method for hydrodynamic processing a surface and device for carrying out said method |
| CN101054695A (en) * | 2007-02-17 | 2007-10-17 | 贵阳铝镁设计研究院 | Charging method and device for purification all around by electrolyzing flue gas using aluminum |
| JP2010046579A (en) * | 2008-08-20 | 2010-03-04 | Babcock Hitachi Kk | Flue gas denitrizer |
| CN101846325A (en) * | 2010-06-02 | 2010-09-29 | 中国石油化工集团公司 | Soot blower |
| CN101876447A (en) * | 2010-07-01 | 2010-11-03 | 中国石油化工股份有限公司 | Soot blower |
| CN103669277A (en) * | 2013-11-26 | 2014-03-26 | 河海大学 | Device and method for guiding fishes to sail upstream |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287763A (en) * | 2016-08-06 | 2017-01-04 | 西安交通大学 | A kind of soot blower vapour source apparatus utilizing low discharge final stage superheated steam |
-
2017
- 2017-05-27 CN CN201710390595.XA patent/CN107300185B/en active Active
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|---|---|---|---|---|
| JPH11294750A (en) * | 1998-04-13 | 1999-10-29 | Babcock Hitachi Kk | Soot blower nozzle |
| WO2004101180A1 (en) * | 2003-05-13 | 2004-11-25 | Zakrytoe Aktsionernoe Obshchestvo 'legranproekt' | Method for hydrodynamic processing a surface and device for carrying out said method |
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| CN101846325A (en) * | 2010-06-02 | 2010-09-29 | 中国石油化工集团公司 | Soot blower |
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| CN107300185A (en) | 2017-10-27 |
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